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    SubjectRe: MTRR setup failure on Fujitsu Lifebook S761
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    On Fri, 2011-08-26 at 15:24 -0700, H. Peter Anvin wrote:
    > On 08/26/2011 02:29 PM, Suresh Siddha wrote:
    > > On Fri, 2011-08-26 at 12:01 -0700, Tony Vroon wrote:
    > >> On Fri, 2011-08-26 at 09:37 -0700, H. Peter Anvin wrote:
    > >>> Hm, I don't see any evidence of the MTRR sanitizer running at all...
    > >>
    > >> It is almost as if it failed to find an optimal configuration; does that
    > >> error path not print anything?
    > >
    > > MTRR cleanup bails out in mtrr_need_cleanup() if it finds any entry
    > > other than WB or UC. And the first entry you had was write-protect.
    >
    > WP for the BIOS is becoming reasonably common; we need to handle that.

    Agree. Ideally in this case PAT should have helped. There must be some
    other hidden issue that I am trying to understand.

    We should address the WP issue nevertheless.

    thanks,
    suresh



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